Double-end-drive reverse clutch



Dec. 16, 1930. R. GERBER 1,785,548

DOUBLE END DRIVE REVERSE CLUTCH Filed Dec. 50, 1929 2 Sheets-Sheet l igjpW Werbe r ATTORNEY I 13. 16, 1930. R GERBER 1,785,548

\ DOUBLE END DRIVE REVERSE CLUTCH Filed Dec. 50 1 2 Sheets-Sheet 2 Patented Dec. 16, 1930 uni-imam GERBER, or RAYMOND! wnsnr varon .DQUBLE'TEND-TDRIVE REVERSE; ene a App icatiomfi a D em e 0; 19129. ser al 11 54 7323;

"The invention is a reverse gear having-adouble end drive which locks the entire *de- "vice as a unit and relieves the nternal parts of driving strains when going ahead.

The invention is an improvement overimy" prior application which was "filed February 24,1927 with the Serial Number 17 0,563- in that theinternal parts'are Inoimte'din a floating drum with frictionolutch jmembers at each end of the drum so that when drivingahead'the drum will'hezheld asaunit andthe strains will notpass through the internal parts.

parts will be relieved of all Working'strain.

Another object of the inventionis'toprovide a reverse clutch a double'end drive with a double toggle for operating the clutchesso that'the pressure may be considerably intensified.

A further objectof the invention is to pro vide dou lole end drive reverse clutch in Whichlthe fioating'inner drum is formed in. ft wojha'lves andjholted together. f

' And a still'furthe'r objectof the invention is" toprovide a double" end drive reverse clutch which is construction.

With these j ends in view, the invention embodies, a reverse clutch as describediin my prior application in which "theradialv spindles are mounted in a floating drum With clutch members at both ends adaptable to hold the drum and internal parts-to the-exterior casing and a special arrangement of levers,'forminga double toggle forinten'sifying the pressurelof the clutch.

'Other'lfeatures and advantages of their ve'ntion' will appear. from the following de-' scription-taken in connection witlrthe draw; ings wherein: 7

The object ofthe invention is -to provide a reverse clutch adaptable'to Withstand c'on siderahle [shock loadwhich is so Q constructed a that when driving ahead the entire device will be locked 'at'both ends andtheinternal I :Qf fat simple and economical I p of'the huld'f anditwill'benoted that this flange may be f rictionally-gripped between Figure 1i Figure 2 is a .crosstse'ction through the aptproximatecenterf with' 'portions broken away 'for showingrthe keys for locating the two halves of the floating drum andalso the-bolts forholding-the halve's'ftogether; T f" l I 1" Figure 3 "is a view'showing a side elevation withxpart of the-outer casing-broken y-V. l ,7 1 Y In the drawings the clutch is-shownasit a longitudinal section through 'the-c'enter'ofthe clutchQf- WOllldbG made wherein-numeral l indicates the reverse drive mecl1anisn1,-numeral '2 the clutch lilechanlsrn at one end, andnumera'l 3tl1e clutChQat-the oppositeend. I

"drum shaped casing formed bywthe-members 4 and 5 and inthe center thereof is a shaft 6 driven from a motor "or engine by, any suitable-means; At the oppositie endof the device is a hub 17" to which-a driven shaft may 'be" connectejdfhy any suitable means.

The entire device is surroundedwithi a cylincasing is hel'd byfa key 9 and it will be j-- noted that at one end 'is' ahead [10 Wl1l 3l1 the head 10 and a flange 1-3 at the end of-the casings 4 and 5. Adjacent 't'o'the opposite =end of thej-casing formedbythemembers 4 and '5- is; another flange 14 which contacts with the grippingi members 15 of theiriction clutch2. V J

The friction clutch is formedby plates 15 held by an Outerring 16-whieh is'moved'in- Ward" or outward iloy levers 17' or118 in which "the-lever 18 is pivotally mounted {in a ring 19' at the-Open'jend ofthecasing; These levers are "operated-by levers Q Oand 21 form- The-mechanism 1 is mount'ed-in split ing another toggle with one end pivoted in a. floating ring 22 on a driving hub 23 which is mounted upon and keyedto the'shaft 6. The end of the hub 23 is made a little longer than the width of the ring 22 to provide ex tra travel or clearance topermitlonger travel for the clutch control collar 24,-. The levers 20 and 21 are connected by a sliding collar 24 through a lever25. It will therefore be observed that through this combination of levers a double toggle action is obtained so that a tremendous pressure may be exertedupon the clutch. It will benoted that the central part of the flange 14 is provided with a hub 26 which is mounted upon the shaft 6 through a ball bearing 27 and another bearing is provided betweenthe sleeve '23 and the hub 26 which is indicated by the r 'made n the construction wlthout departing numeral 28. This bearing28 is formed of a tough bronze ring which. besides forming a bearing for the hub 23 also forms a band to rigidly hold the two half sections it and 5 refit-he split drum shaped casing together to prevent them opening up around the bear1ng 27,- and this r ng also forms a seal or packing gland topreVent oil from: the interior leaking out aroundthe hub tothe clutch plates. The reverse mechanism, asindicated by the numeral -l, is formed on theinterior-of the casing formed by the members t and 5, and is formed by beveled inclined rollers 29 held between flanges 30 and 31 :exten'ding from a hub 32, and oppositely positioned similar-rollers 33 held between flanges 34 and i 35 extending from; a hub 36, and heavy toothed sprockets 37 mounted upon radially 6 through bearings 48and 49.

extending spindles 3 8;- as shown. The spindles 38 are rotatably mounted at their inner endsin at 11111 59 through bearings 40 with a sleeve. 41 through the center thereof and through which the-hubj ismountedaipon the shaft 6. The outerendsof'the spindles are mounted in bearings 42 in hubs 43 extending inward from the casing'formed by firemen bers' anfd '5. Thebearing's42 may beheld inthe hubs 43 by split spring rings as as shown, and the sprockets 37- may be mount ,ed upon the spindles 38 by collars 45 or in any suitable manner. p -i It will be noted that the hub 36'is provided with stud pins 46 that extend into openings 4'? in the member 3 so that they will be forced to rotate in unison a'nd also :thatthe hub136 is mounted upon the shaft The clutch is provided with extend outward from the hub 39 as shown in Figure 2 and it will be noted that-the-outer ends 51 of these arms form 'keys which into notches 52 and 53 in the members 4 and 5 to locate them when assembling- Adj acent V to'the outer ends of the arms .arecollars 54 and it will-be noted that the' members 4:: and 5am provided with bosses 55. and 56 3; which engage the collars." Thel members; 4

was 50 which,

and 5 are rigidly held together by the bolts 57 in recesses 58 and form a drum shaped casing which is split longitudinally on the line 59. r

The cylindrical casing 8 is'surrounded by a brake 60 as shown in Figure 3, so that the housing may be held when desired to hold the sprocket assembly in order to obtain a reverse drive. It will be noted that with the clutches on the interior released and the brake band gripping the outer housing 8, the driving element will rotate the sprockets 37, and as the spindlesupon which the sprockets are mounted are held in a stationary poitionthese sprockets will in turn rotate the driven element in a direction opposite to that of the driving element. 7

It willbe understood that changes may be from the spirit of the invention. One of which; changes may be in the design or arrangementQ-O'f the clutch members, another may be inthe use of the housing and clutch members withany other-type of reverse. gearin andstill'. another may be inthe use of other means for operating the clutch members; .m

' The construction will be readily, understoodfrom'theforegoing description. Inuse the clutch maybe provided asshown and described and it will be understood that it may be used in the-drive shaft of a boat or other device where it is desired toreverse the drive and-it will-be observed that whendriving ahead the clutch members will be in the PQSllSlOH shown inthe drawlngand the interior'willbe held as'a unit so that the driving strain will' pass "directly through the housing and not through theinternal parts.

The only strain that will be exerted on the nterior is when the device s be ng used for driving in reverse. and then the strains are taken directly through the reverse gearing. This arrangement is a decided-improvement over that of the prior application because the interior parts are relievedof all driving strains and stresses. when driving forward. Having thus fully described the invention, what I claim as Letters Patent, isznewyand desire to secure by 1. In a reverse gear ofthecharacterdescribed, ooaxially arranged driving and driven elements each having circumferentlal sets ;of rollers, an. assembly of rotatably for operatingthe said clutches from one'end releasable means for holding the said surroundlng casing. i r v through the housing, a suitable surrounding. casing, and

V clutches'at both ends of the'housing for ho-ldv 2. In a reverse gear'of the character described, a drum shaped housing, coaxially arranged driving and driven elements each having circumferential sets of rollers, an assembly of rotatably mounted sprockets each of which is in permanent engagement with both of said sets of rollers, friction clutches at both ends of the housingfor holding the said driving and driven elements in relationto the said housing, a double toggle for operating both of the clutches from one end of the 1 housing, a suitablesurroundin g'casing, and

releasable means for holding the said suring the said driving and driven elements in relation to the said housing, a double toggle for operating thesaidclutches from one end,

a suitable outer cylindrical housing With means atthe ends for taking the stressof the clutch action, and releasable means for hold:

ing the said outer cylindrical housing.

4. In a reverse gear of the character described, a drive shaft, a connection for ya driven shaft in axial alignment With the said drive sha ft, outwardly extending inclined flanges mounted on the said drive shaft, tapered rollers r-otatably mounted betweenflthe said inclined flanges, other inclined flanges tached to the said driven element, suitable friction clutches at both ends of the housing for holding the said driving and driven elementsin relation to the saidh-ousing, a double toggle for operating the clutches at both ends from one end, a suitable outer cylindrical housing arranged to take the clutch thrust at both ends, and releasable means for holding I the said outer cylindrical housing; In testimony whereof I aflix mysignature.

. RALPH GERBER.

rotatably mounted onthe said drive shaft and, connected to the driven'shaft connectiom'ta pered rollers also rotatably mounted'between the said latter inclined flanges, a plurality of heavy toothed sprockets engaging with both sets of the said tapered rollers, a split drum shaped casing surrounding the said rollers, flanges, and sprockets, radially positioned spindles rotatably mounted in thesaid drum shaped casing and upon which the said sprockets are mounted, friction clutches :at'r I L I I the .ends of the said drum shaped casing for holding the said driving and drivenelements in relation to the said housing, doubleaction f toggles for exerting the pressure uponthe said clutch members, a suitable housing surrounding the said devlce, and releasable ing.

means for holding the said surroundingcas- 5. In a reverse gear of the character de-; 1

scribed, a drum shaped housing, coaxially arranged driving and driven elements each having circumferential sets of rollers, an as- I sembly of rotatably mounted sprockets each of which is in permanent engagement with both'ofsaid sets of rollers, a drive shafteX-V tending 'into and substantially through the housing and, connected to the'saiddriving element, a connectionqfor a driven shaftjat- 

